The present invention relates to substituted benzamide derivatives of the Formula I and their pharmaceutically acceptable salts, pharmaceutically acceptable solvates, enantiomers, diastereomers, prodrugs, metabolites, and polymorphs and can be useful for treating disease states mediated by glucokinase. Compounds disclosed herein can be used for reducing blood glucose levels and for increasing insulin secretion for treating type II diabetes. The invention also relates to processes for the preparation of the compounds of invention, pharmaceutical compositions containing the compounds, and their use.